My favorite solution for storage of excess power is closed loop pumped hydro. Two bodies of water of different elevations are connected by a generator/pump. When there is too much power, the pump moves the water to the higher lake. When the power is needed, the water flows through the generator to the lower lake.

[–] Kyoyeou 2 points 7 months ago (1 children)

That was a very cool read!

[–] miningforrocks@lemmy.ml -3 points 7 months ago (1 children)

The only problem is that it is inefficient

[–] JoeBigelow@lemmy.ca 34 points 7 months ago (2 children)

It's more efficient than just dumping the energy, at least some is being stored

[–] miningforrocks@lemmy.ml 7 points 7 months ago

That's true

[–] freebee@sh.itjust.works -1 points 7 months ago (1 children)

depends a bit on how much energy it costs to build it all, how many decades it should be used how often, and if it's then durable enough to actually earn back the extra energy it costs. It might, just sayin'

[–] Dashmezzo@lemm.ee 3 points 7 months ago

We use gravity batteries in the UK. They work well and are pretty good at their efficiency. When you are creating massive systems they are made to last decades. There is always upkeep but it is the same with coal, gas and nuclear plants. All these renewables are far cheaper and far more cost effective than these power stations and for years the main problem has been that wind and solar cannot be used as base load, but with battery storage on a mass scale, thermal and hydrogen storage, we are now at a place where building out far more solar and wind than we need is viable and mixing in these technologies to provide base load and grid stability.

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